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Product Datasheet

Diagnostic Monitoring Interface

Digital diagnostics monitoring function is available on all QSFP+ SR4. A 2-wire serial interface provides user

to contact with module. The structure of the memory is shown in flowing. The memory space is arranged

into a lower, single page, address space of 128 bytes and multiple upper address space pages. This

structure permits timely access to addresses in the lower page, such as Interrupt Flags and Monitors. Less

time critical time entries, such as serial ID information and threshold settings, are available with the Page

Select function. The interface address used is A0xh and is mainly used for time critical data like interrupt

handling in order to enable a one-time-read for all data related to an interrupt situation. After an interrupt,

IntL, has been asserted, the host can read out the flag field to determine the affected channel and type of

flag.